Pump



Feb. 11, 1936. H. ALLEN 2,030,041

PUMP

Filed May 14, 1934 000000000000 ooooo o' o' o oooo Hefberi Allen INVENTOR,

A TTORNEY.

Patented Feb. 11, 1936 UNITED STATES PATENT OFF-ICE 6 Claims. (01.103-220) This invention relates generally to pumps and specifically to strainers for the suction manifolds thereof.

. It has for its general object the provision of a new and improved strainer that will efficiently prevent the entrance into the'pump of foreign matter, and thatmay readily be removed, cleaned and replaced. A further object of this invention is to provide a new and improved inlet manifold such that the straining action in it is more uniform and less localized.

Specific objects will hereinafter appear.

The preferred embodiment of the invention is illustrated by the accompanying drawing wherein Fig. l is a fragmentary partly sectional elevation of a pump in which the strainer may be efiectively used; and Fig. 2, a detail partly sectional view of the suction manifold and strainer assembly. I 1 p The drawing illustrates one of the various pumps with which the present invention may be effectively used. This pump is of the type fully described by the patent to Stephens No. 1,848,441, and includes-a pair of axially aligned and spaced barrels 2 and 3. The barrel 3 has pump inlet and outlet means 4 and 5, respectively and the.

. each of the barrelssuch as that indicated at 9" in the barrel 3 to effect the'expansion and-contraction of said members to draw pumped fluid through the pump inlet passageways 8 and I into thebarrels, and to expel it from the barrels through the pump outlet means of the barrels. The inlet and outlet means (such as 4 and 5) inc ude valves, and the pump operates inthe manner set forth in the said patent to Stephens 1,848,441.

Referring now to the present invention, the

pump includes a suction manifold. ill extendingsubstantially transversely of the barrels '2 and 3, and having in its opposite sides staggered manifold outlet ports II and I! which may be connected to the pump inlet passageways 8 and 1, respectively, by means of the flanges l3 and I4. One end of the suction manifold lll .may have thereon a cover l5, and the other end may be connected by means of flanges l6 and II to' an entrance pipe I8;

The body of the suction manifold in comprises substantially an elongated cylinder, and within the manifold I is placed a screen comprising a substantially cylindrical perforated pipe, concentric and coextensive therewith and radial- 1y spaced therefrom.

The pumped fluid enters the strainer I! through the entrance pipe l8 and passes through the perforations into the space between the strainer l9 and manifold l0, and then through 10 the manifold outlet ports I l and 12 into the pump inlet passageways 6 and I and finally into the barrels 2 and 3. As a result of staggering these inlets the fluid leaves the inlet manifold at two different points spaced longitudinally thereof, 15 thus facilitating a more even flow of fluid through the manifold and allowing the fluid to be strained over a more-extensive area of the screen, thus avoiding a single localized zone of screening ac- ,tion. This also avoids. the accumulationof screened matter at a single point in the manifold and materially lessens the possibility of a stoppage.

The foreign'matter or trash is trapped within the screen l9, and after the cover l5 has been removed the screen I! may be pulled out of the manifold Ill and the foreign matter or trash removed therefrom, after which the screen and cover may-readily be replaced.

g It will be obvious that the foreign matter or 80 trash will be removed from the pumped fluid without interference with the free movement of the pumped fluid into the barrels. and that the v lindrical body with staggered manifold outlet ports between its ends andan entrance opening at one end; a strainer in said manifold having a substantially cylindrical body concentric and coextensive with .and radially spaced from the body of said manifold, perforated, and communicating with said entrance opening; said'mani fold having on one end a removable cover, and J said strainer beinginsertable in and removable thru said end whensaid cover is removed. i V "2. A pumpghavinga suction manifold, said manifold having an elongated substantially 051- ports between its ends and an entrance opening at one end; a strainer in said manifold, said strainer having a substantially cylindrical body concentric and coextensive with and radially spaced from the body of said manifold, perforated, and communicating with said entrance opening.

3. A pump having a pair of axially aligned spaced barrels each having inlet and outlet means; an elongated suction manifold extending substantially transversely of said barrels; staggered manifold outlets an inlet passageway on each side of said suction manifold, extending upwardly to one of said barrels and connected to one of said manifold outlets; and a strainer within and co-extensive with said manifold.

4. A pump having a pair of axially aligned spaced barrels; an elongated suction manifold extending substantially transversely of said barrels; an inlet passageway on each side of said suction manifold and extending upwardly to one of said barrels; and a strainer in said manifold.

5. A pump having a plurality of longitudinally aligned barrels, each of said barrels having inlet lindrical body with staggered manifold outletand outlet means, a main inlet pipe extending transversely of said barrels and having a plurality of outlets in staggered relation with respect to its length, a foraminous strainer substantially cylindrical in form interiorally of said main inlet Dipeand in spaced relation to the interior walls thereof, and means connecting the outlets in said main inlet pipe to the inlet means of said barrels.

6. A pump having a pair of axially aligned barrels; a suction manifold having an elongated substantially cylindrical body extending substantially transversely of said barrels having staggered manifold outlet ports between its ends communicating with said barrels; anentrance opening at one end of said manifold; a strainer in said manifold having a substantially cylindrical bo y, perforated, concentric and coextensive with and radially spaced from the body of said manifold, and communicating with said entrance opening; a removable cover von one end of said manifold; and said strainer being insertable in and removable from said end when said cover is removed.

HERBERT ALLEN. 

